Platen printing-press.



No. 786,072. PATENTED MAR. 28, 1905.

- I. WAITE.

.PLATEN PRINTING PRESS.

APPLICATION FILED JULY 15,1903.

A A l wmm ArraQn/AYJ UNITED STATES Patented March 28, 1905 FRED VVAITE,OF OTLEY, ENGLAND.

PLATEN PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent N0. 786,072, dated March28, 1905.

Application filed July 15, 1903. Serial No. 165,672.

To (Z whom it may concern.-

Be it known that I, FRED \VAITE, a subject of the King of England,residing at Bnrras Lane, Otley, England, have invented certain new anduseful Improvements in Certain Platen Printing-Presses, of which thefollowing is a specification.

This invention relates to'improvements in that class of platenprinting-presses in which the paper or other material to be printed isfed from a roll in a continuous web or sheet; and its object is toincrease the quantity of work done by this class of machine. For thispurpose I employ two type-beds and platens arranged to give alternateimpressions, and I feed the paper such a distance at each movement thatthere is sufficient space between the impressions made by the firsttypebed to receive the impressions from the second type-bed. Suitableprovision may be made for allowing considerable adjustment of the formsupon the type-bed to adapt the machine to print difierent sizes ofmatter. I prefer to mount the two type-beds in such a way that onebalances the other. A convenient way of doing this is to rigidly connectthe two type-beds together and mount them on a central rocking shaft ortrunnion-pivots on a flat platen-bed, so that they can be alter natelybrought down onto the bed at opposite sides of the rocking shaft. Thecenter of vibration is preferably in the same plane as the platens, andwhen a rocking shaft is employed it may have aslitor passage through itor be cut away at one side to allow the paper to pass.

To fully describe my invention, reference is made to the accompanyingsheet of drawings, forming a part of this specification, in whichsimilar reference-numerals indicate corresponding parts in each of theviews.

Figure 1 is a side elevation of my improved press. Fig. 2 is a plan viewof the same with the type-bed and platen on the left-hand side omitted.

The two type-beds 2, carrying the adjustable form-chases 3, are madeintegral with the rocking frame 4: or are rigidly secured to it. In thedrawings the frame 4 is shown mounted by trunnions 5 in the bearings 6,

formed in the side frames 7; but instead of trunnions a rocking shaftmay be used and suflicient of the central portion cut away to allow theweb of paper 8 to pass without deviation. The rocking frame 4 isactuated by a rod 10 on each side connecting it to the crank-pins 12 inthe wheels 13 and 1 T on the shaft 15 and which are driven by thepinionwheels 16 on the driving-shaft 17.

The two platens 18 are fixed to the tops of the side frames 7 and arepreferably provided with detachable make-ready plates 19. In Fig. 1 theleft-hand type-bed is shown in position for the type carried by itschase to print an impression on the paper 8, lying on the platenbeneath, and when the frame L is rocked such type is raised and theright-hand type-bed is brought down to give an impression. In theintervals between the impressions the web of paper is drawn by therollers 20 and 21 in the direction of the arrow, Fig. 1, a sufficientdistance to bring a fresh portion of the web of paper 8 onto theleft-hand platen. This portion, however, is not printed upon on thatplaten, but is carried forward, and it is the next portion brought ontothe platen by the movement of the web of paper I that is printed upon.This leaves blank spaces between the impressions made on the lefthandplaten, and the two chases are so adjusted on their respective type-bedsthat these spaces are printed upon on the right-hand platen when theyreach it. In case of twocolor work the paper-web 8 is only moved halfthe distance at each movement, and one color is printed on one platenand the other color on the other platen. A roller 23, carried by arms 24on the shaft 25, is provided between the platens above the web of paper8, so that in case the adjustment of the chases on the type-beds is notsufficient to bring the blank spaces accurately into register on theright-hand platen the roller 23 can be lowered so as to more or lessdepress the paper at that part and correspondingly increase the distanceit has to travel from one platen to the other. A guide-roller 22 for theweb 8 is provided on each side of the roller 23, level with the upperfaces of the make-ready plates 19. The shaft 25 is fixed to hold theroller 23 in position by its arm 26, clamped to the side frame by thestud 27 passing through the slot 28 in the arm. The rollers 20 and 21are geared together, and the roller 20 is intermittently operated by thepawl 29, carried by the arm 30 of the lever 31, and the other arm, 32,is connected by the rod 33 to the adjustable crank-stud 341 in the wheel35 on the shaft 36. As the wheel 35 is driven in the direction of itsarrow at twice the speed of the wheel 14, there is an ample intervalbetween each movement of the web to allow the impression to be made.

The web 8 of paper is drawn off the roll 38 by the drawing-off rollers40 and .1. The roller 40 is mounted on the shaft 42, driven by thepulley 43, which is connected by the belt 44 to the pulley 4L5 on theshaft L6. The shaft 456 is driven by the cone 47, connected by the belt48 to the cone 50. The cone 50 is fixed on the shaft 51, which is drivenby its sprocket-wheel 52 from the sprocketwheel 53 on the shaft 15 bythe chain 55. The cones 4:7 and 50 are introduced to enable the speed ofthe rollers 40 and ll to be adjusted to draw off the paper from the roll38 at the same speed as it is consumed or slightly faster. Theadjustment is effected by the double belt-fork 57 engaging the belt 48and carried by the adjustment-screw 58 and cross guide-rod 59. Ahand-wheel 60 is provided on the adjustment-screw, which latter isconfined longitudinally in bearings in the side frames 7 and fits afemale thread in the guide 59.

The inking-cylinders 62 are driven by the sprocket-wheels 63 on theirshafts 64 by the chains 65 on the sprocket-wheels 66, fixed on theshafts 67 and 68, geared together by the spur-wheels 69 and 70. Theshaft 67 is driven by the sprocket-wheel 71, connected by the chain 72to the sprocket-wheel 74: on the shaft 51.

The inking-rollers 75 are mounted in carriers 76, pivoted to the levers77, which are pivoted to the lower ends of the arms 78, fixed to therocking shafts 79 and 80. Spring-rods 81 are connected to the levers 77and are adapted to keep the rollers pressed against the cylinders 62 andthe bearers 82. The shafts 79 and 80 are rocked to actuate theinking-rollers by the arms 83 fixed to them. The arms 83 are connectedby the links Set to the rock ing studs 85, mounted in hearings in theside frame 7. As the frame 4 is rocked the links 84 and connecting partscause the inking-rollers 75 to move from contact with the inkingcylinderand over the form and back again. The rollers 75 on the left-hand sideare shown in contact with the cylinder 62, receiving ink while theimpression is made. The rollers 75 on the right-hand side havecompletely passed over the form and are on the point of returning to thecylinder 62. The ink is conveyed from the ductor-roller 86 to thecylinders 62 by the rollers 87, which are carried by the arms 88, fixedon the rocking shafts 89. The shafts 89 are rocked by their arms 90engaging the cams 91 on the shaft 67. Distributing-rollers arepreferably used; but to avoid confusion they are not shown. The rollers86 are revolved in the ink-ducts 92 by the pawls 93 engaging theratchet-wheels 94: on the roller-shafts. The pawls 93 are carried by thelevers 95, vibrated by the rods 96, coupled to the lever 97, pivoted tothe rocking frame 4. The lever 97 is vibrated by the rod 98, coupled tothe arm 99 on the rocking shaft 79.

Instead of arranging the two platens in the same plane they may bearranged at an angle to each other--as, for instance, at right angles toeach other. In this case instead of the roller 23 one or more adjustablerollers may be provided between the platens for the back of the paper topass over.

The machine may be fitted with perforating, cutting, slitting, paging,ruling, folding, and other attachments.

As the speed at which a platen printing-machine can be driven is mainlylimited by the speed at which the form can be inked, it will be seenthat by the employment of two platens giving alternate impressions witha feed for each I am enabled to greatly increase the output, for ampletime is afforded to ink each form between the impressions it imparts.Furthermore, by this arrangement the paper is fed in a convenient mannerfor such operations as paging, perforating, cutting, and the like.

1. A platen printing-machine intermittently fed for each impression fromaroll, two platens arranged in the same horizontal plane, and

having two type-beds arranged to give al ternate impressions,substantially as herein shown and described.

2. A platen printing-machine intermittently fed for each impression froma roll, two platens arranged in the same horizontal plane, and havingtwo type-beds arranged to balance each other and give alternateimpressions substantially as herein shown and described.

3. A platen printing-machine intermittently fed for each impression froma roll, two platens arranged in the same horizontal plane, and havingtwo type-beds arranged to vibrate on the same center and give alternateimpressions, substantially as herein shown and described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

F RED WAITE.

\Vitnesses:

JASON LAVILLE, FREDERIO THOMAS HUNTER.

